!!! Overview

!! [OAuth 2.0]
[{$pagename}] is a typical [OAuth Error] value defined in the [OAuth Parameters Registry][{$pagename}] implies the [Authorization Server] encountered an [Unintended consequence] that prevented it from fulfilling the request. (This [error] code is needed because a [HTTP Status Code] 500 (Internal Server Error) cannot be returned to the [client] via an [URL redirection].)

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]